switch to using user_ptr for pointers coming from userland

this avoid accidental dereferences, and now it's easy to tell apart
which pointers are safe to directly read and which aren't.

cons:
- const is completely discarded

1 files changed, 3 insertions, 0 deletions

diff --git a/src/kernel/types.h b/src/kernel/types.h
new file mode 100644
index 0000000..eb12f08
--- /dev/null
+++ b/src/kernel/types.h
@@ -0,0 +1,3 @@
+#pragma once
+#include <stdint.h>
+typedef uintptr_t user_ptr;